JP6498596B2 - Heat sensitive joint - Google Patents

Description

  The present invention relates to a fire extinguishing facility provided on a ceiling.

  The heat-sensitive open joint is a joint that is provided between a fire extinguishing pipe to which a fire extinguishing agent is supplied and a fire extinguishing pipe connected to the sprinkler head and senses heat to supply the fire extinguishing agent to the sprinkler head. Air heated during a fire travels through the top of the space. Therefore, when installing a heat-sensitive open joint in a facility where there is no ceiling like an underground parking lot and ducts and pipes are exposed at the top of the space, attach the heat-sensitive part upward as in Patent Document 1. Used. However, in a facility with a ceiling plate such as a living room, fire extinguishing pipes and the like are installed above the ceiling plate. And since the air heated in the case of a fire spreads along the lower surface of a ceiling board, as shown in FIG. 6 of patent document 2, it is necessary to install the heat-sensitive part toward the lower part under the ceiling board. is there.

  FIG. 4 shows a state in which the heat-sensitive open joint 101 in the conventional example is installed on the ceiling 13. The heat-sensitive open joint 101 includes a primary-side connection port 111 into which the extinguishing agent flows in an attached state, a secondary-side connection port 112 sideward, and a heat-sensitive part 120 below. The primary pipe 9 is a fire extinguishing pipe into which a fire extinguishing agent flows, and is connected to the primary side connection port 111. The heat-sensitive open joint 101 is fixed to a floor slab or the like on the upper floor by a fixing structure (not shown) located behind the ceiling.

JP 2004-160161 A JP 2006-305376 A

  As shown in FIG. 4, the ceiling 13 is generally provided with a field edge 132 to which the ceiling board 131 is attached and a field edge receiver (not shown) to which the field edge 132 is attached, on the ceiling behind the ceiling board 131. Yes. Then, the field receiver is suspended from a ceiling upper surface 15 which is the lower surface of the floor slab on the upper floor by a hanging tree (not shown). When the heat-sensitive open joint 101 is installed, if a field edge 132 or the like is disposed near the secondary side connection port 112 as shown in FIG. 4, secondary piping that supplies a fire extinguishing agent to the sprinkler head that is the discharge port. Cannot be attached to the secondary side connection port 112. Therefore, it is necessary to install the heat-sensitive open joint 101 in a place where there is no field edge 132 so that the field edge 132 and the field edge receiver do not interfere with the secondary pipe from the secondary side connection port 112. The installation position will be restricted.

  In order not to restrict the installation position of the heat-sensitive opening joint 101, it is possible to open the heat-sensitive area by lengthening the space between the secondary-side connection port 112 and the heat-sensitive portion 120 and increasing the position of the secondary-side connection port 112 to avoid the field edge 132. The joint 101 becomes large. Furthermore, since the position of the primary side connection port 111 is increased, the primary pipe 9 interferes with the ceiling back upper surface 15 when the space between the ceiling plate 131 and the ceiling back upper surface 15 is narrow as shown in FIG. The heat-sensitive open joint 101 cannot be installed.

  The present invention is for solving the above-described problems and has the following configuration.

(1) The present invention includes a primary side connection port through which a fire extinguishing agent flows, a secondary side connection port through which the fire extinguishing agent flows out, the primary side connection port, and the secondary side connection. A heat-sensitive opening joint comprising: a valve body that closes between the mouths; and a heat-sensitive part that opens the valve body when sensing heat and communicates the primary-side connection port and the secondary-side connection port, The secondary side connection port is provided at a side of the primary side connection port, and the secondary side connection port is perpendicular to a first axis that is an axis connecting the primary side connection port and the heat sensitive part. The direction of the 2nd axis | shaft which is an axis | shaft is a heat-sensitive open joint characterized by inclining toward the said primary side connection port side.

  According to the present invention, piping to a sprinkler head that is a discharge port can be performed while avoiding a field edge or the like on the ceiling plate. In addition, since the position of the primary side connection port does not increase, the heat-sensitive joint can be installed even if the space between the ceiling back surface and the ceiling plate is narrow.

(2) Further, in the present invention, a plurality of the secondary side connection ports are provided, and the plurality of second axes intersect at a predetermined position of the first axis. It is a heat sensitive joint.
This crossing only needs to cross at a predetermined position of the first axis when the heat-sensitive open joint is viewed from the side. For example, a plurality of second axes may be in a twisted position.

  According to the present invention, a fire extinguisher can be delivered to a plurality of sprinkler heads without using branch parts. Further, since the plurality of second axes intersect at the same position of the first axis, for example, the heat-release joint having the plurality of second axes having the same intersection angle with the first axis is from the primary side connection port to the heat-sensitive part. The length of is suppressed.

(3) Moreover, this invention is a heat-sensitive open joint as described in (2) characterized by the several said secondary side connection port being provided symmetrically with respect to said 1st axis | shaft.

  According to the present invention, when the fire extinguisher passes through the heat-sensitive open joint, the lateral force applied to the heat-sensitive open joint by the flow is offset by the symmetrical provision of the secondary side connection port, and the heat is detected at the time of heat. The open joint is stable.

(4) Further, in the present invention, the angle formed by the first axis and the second axis is 50 to 70 degrees, and the heat-sensitive open joint according to any one of (1) to (3) It is.

  According to the present invention, since the direction of the axis of the secondary side connection port is arranged obliquely, the secondary pipe attached to the heat-sensitive open joint can be easily piped to the sprinkler head while avoiding the edge of the upper part of the ceiling plate. As a result, it is possible to provide a heat-sensitive open joint with a high degree of freedom in installation position.

The external view of the heat-sensitive open joint 1 in embodiment of this invention. Sectional drawing of the heat-sensitive open joint 1 in embodiment of this invention. The figure which shows the state which installed the heat-sensitive open joint 1 in embodiment of this invention in the ceiling 13. FIG. The figure which shows the state in which the heat-sensitive open joint 101 in the prior art example was installed in the ceiling 13.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, this embodiment described below is only an illustration of the present invention in all respects. Various improvements and modifications may be made without departing from the scope of the present invention. That is, in implementing the present invention, a specific configuration according to the embodiment may be adopted as appropriate. In the following, the positional relationship of each component will be described by the direction in the installed state of the heat-sensitive open joint 1 and the direction in the drawing.

FIG. 1 is an external view of a heat-sensitive open joint 1 according to an embodiment of the present invention. FIG. 1A is a top view of the heat-sensitive open joint 1 in a state where it is installed on the ceiling 13, and FIG.
When the heat-sensitive open joint 1 is viewed from above, four secondary side connection ports 22a, 22b, 22c, and 22d are provided around the side of the primary side connection port 21, as shown in FIG. Yes. When viewed from the side, the primary side connection port 21 faces upward as shown in FIG. 1B, while the secondary side connection ports 22a, 22b, 22c, and 22d face obliquely upward. . The heat-sensitive open joint 1 includes a glass bulb 5 as a heat-sensitive part at the lower part.

  The primary pipe 9 is attached to the primary side connection port 21 and a fire extinguisher flows in. Further, secondary pipes 10a and the like (FIG. 3), which will be described later, are attached to the secondary side connection ports 22a, 22b, 22c, and 22d to flow out the fire extinguishing agent and supply the fire extinguishing agent to the sprinkler head.

  FIG. 2 is a cross-sectional view of a heat-sensitive open joint according to an embodiment of the present invention, and shows a state viewed from the side by cutting at the position of line AA in FIG. The main body 2 is provided with a primary side connection port 21 and secondary side connection ports 22a, 22b, 22c, and 22d, which are connected to each other in the absence of the valve body 3. The secondary side connection port 22b is provided on the near side of FIG. 2, and the secondary side connection port 22d is provided on the back side, but FIG. 2 is not shown because it is a side cutaway view. A valve body 3 is provided under the primary side connection port 21. The valve body 3 is configured by fitting a copper-made ring-shaped disc spring 31 into a convex portion at the upper end of the piston 4, and the disc spring 31 is moved upward by the piston 4 being pressed upward. To close the path between the primary side connection port 21 and the secondary side connection ports 22a, 22b, 22c, 22d. A piston hole 71 is provided in the frame 7 and the piston 4 is inserted therein. The frame 7 and the piston 4 are made of metal, and a gap is provided in most of the area between the piston 4 and the piston hole 71 to prevent sticking. A glass bulb 5 as a heat sensitive part is provided under the piston 4. The glass bulb 5 is a glass tube in which alcohol is sealed, and is a heat-sensitive portion that breaks the glass tube due to expansion of the alcohol by heat. A frame insertion port 23 is provided below the main body 2, and the frame 7 is screwed and fixed. The lower part of the frame 7 is a plate-like arm 72, and a fixing screw 6 is screwed into the lower end. The glass bulb 5 inside the arm 72 is fixed with a fixing screw 6. A protective cover 8 is provided outside the arm 72. The protective cover 8 is for protecting the glass bulb 5 from colliding with objects, and is fixed to the lower end of the main body 2.

  In FIG. 2, the first axis 210 indicated by the alternate long and short dash line is an axis connecting the primary side connection port 21 and the glass bulb 5 as the heat sensitive part, and the second axes 220a and 220c are the secondary side connection ports 22a and 22c. Axis. The directions of the second shafts 220a and 220c are inclined from the direction perpendicular to the first shaft 210 toward the primary connection port 21, and the secondary connection ports 22a and 22c are directed obliquely upward. Further, the primary side connection port 21 faces upward. The plurality of second axes 220 a and 220 c intersect at a predetermined position C of the first axis 210. The same applies to the secondary connection ports 22b and 22d that are not displayed and the second shafts 220b and 220d. The secondary side connection ports 22a and 22c and 22b and 22d are provided symmetrically with respect to the first axis 210, respectively, and the second axis 220a and the first axis 210, the second axis 220b and the first axis which are the inclination angles thereof. The angles of the axis 210, the second axis 220c and the first axis 210, and the second axis 220d and the first axis 210 are all equal.

Next, the operation of the heat-sensitive open joint 1 will be described.
At the time of monitoring before the occurrence of a fire, the glass bulb 5 is pushed up by the fixing screw 6 to support the piston 4 and push up the valve body 3 including the upper end of the piston 4 and the disc spring 31. And the valve body 3 is located upwards, the disc spring 31 is pressed against the main-body part 2, and the path | route between the primary side connection port 21 and secondary side connection port 22a, 22b, 22c, 22d is closed.

  At the time of operation for detecting heat due to a fire, the glass bulb 5 reaches a certain temperature or more, and the alcohol inside the glass bulb expands, and the glass bulb 5 breaks. As a result, the piston 4 becomes unsupported and moves downward together with the valve body 3 by the pressure of the extinguishing agent transmitted from the primary side connection port 21 to the valve body 3 and the weight of the piston 4 to open the valve body 3. The connection port 21 communicates with the secondary side connection ports 22a, 22b, 22c, and 22d. As a result, the fire extinguishing agent flows in from the primary side connection port 21, flows out of the secondary side connection ports 22a, 22b, 22c, and 22d, and each sprinkler head 11a, via the secondary pipes 10a, 10b, 10c, and 10d. 11b, 11c and 11d are supplied to extinguish the fire by spraying.

Next, the installation state of the heat-sensitive open joint 1 will be described.
FIG. 3 is a diagram illustrating a state in which the heat-sensitive open joint 1 according to the embodiment of the present invention is installed on the ceiling 13. The ceiling board 131 and the like are shown in cross section. In FIG. 3, the description of the secondary side connection port 22b, the secondary pipe 10b, and the sprinkler head 11b on the near side of the heat-sensitive open joint 1 is omitted. Further, the secondary side connection port 22d, the secondary pipe 10d, and the sprinkler head 11d on the back side in FIG. 3 are not described because they are hidden in the heat-sensitive open joint 1 and the like.

  In the space between the ceiling board 131 and the ceiling upper surface 15, the heat-sensitive open joint 1 is fixed by a fixing member (not shown), connected to the primary pipe 9 at the primary side connection port 21, and the secondary side connection ports 22a, 22b, 22c. 22d are connected to the secondary pipes 10a, 10b, 10c, 10d. The secondary pipes 10a, 10b, 10c, and 10d are connected to the sprinkler heads 11a, 11b, 11c, and 11d, respectively.

  Since the secondary connection ports 22a, 22b, 22c, and 22d of the heat-sensitive open joint 1 face obliquely upward, the secondary pipes 10a, 10b, 10c, and 10d can easily avoid the edge 132 as shown in FIG. Thus, the sprinkler heads 11a, 11b, 11c, and 11d are reached. In addition, the positions of the secondary side connection ports 22a, 22b, 22c, and 22d do not become high although the field edge 132 is avoided. Therefore, the heat-sensitive open joint 1 is not elongated in the vertical direction, and the position of the primary side connection port 21 is also lowered. Therefore, the interference of the primary piping 9 to the ceiling back upper surface 15 hardly occurs.

  In the embodiment, the heat-sensitive open joint 1 includes four secondary side connection ports, but may be one or any number. In the embodiment, the secondary side connection ports 22a, 22c, 22b, and 22d are provided symmetrically with respect to the primary side connection port 21, respectively. Since the lateral force applied to the heat-sensitive open joint 1 is canceled by the flow of the fire extinguishing agent when spraying the fire extinguishing agent, it is preferable to provide it symmetrically in this way, but it is not always necessary to be symmetrical. Moreover, it is not necessary that all the secondary side connection ports 22a to 22d provided are connected to the secondary pipe, and some of them may be closed by a closing member.

  Further, the plurality of second axes may be in a twisted position, but it is preferable that they intersect at a predetermined position of the first axis when the heat sensitive joint is viewed from the side. Note that, as in the embodiment, the plurality of second axes may not intersect at a predetermined position of the first axis. As an angle for avoiding the field edge 132, the angle formed by the first axis and the second axis is preferably 50 to 70 degrees.

DESCRIPTION OF SYMBOLS 1 Thermal release joint, 2 Main-body part, 21 Primary side connection port, 22a, 22b, 22c, 22d Secondary side connection port, 210 1st axis | shaft, 220a, 220b, 220c, 220d 2nd axis | shaft, 23 Frame insertion port, 24 Valve seat, 3 valve body, 31 disc spring, 4 piston, 5 glass valve (heat sensitive part), 6 fixing screw, 7 frame, 71 piston hole, 72 arm, 8 protective cover, 9 primary piping, 10a, 10b, 10c, 10d secondary piping, 11a, 11b, 11c, 11d sprinkler head, 101 heat-sensitive open joint, 111 primary side connection port, 112 secondary side connection port, 120 heat sensitive part, 13 ceiling, 131 ceiling plate, 132 field edge, 15 ceiling Back top

Claims (3)

A primary side connection port through which a fire extinguishing agent flows , a main body portion that communicates with the primary side connection port and has a secondary side connection port through which the extinguishing agent flows out;
A valve body that plugs between the primary side connection port and the secondary side connection port;
When the heat is sensed, the valve body is opened, and a heat-sensitive part that communicates between the primary side connection port and the secondary side connection port;
A heat- dissipating joint provided with a frame provided around the heat-sensitive part, and having no sprinkler head ,
The secondary side connection port is provided on a side of the primary side connection port,
The direction of the second axis, which is the axis of the secondary connection port, is directed toward the primary connection port, with respect to the direction perpendicular to the first axis, which is the axis connecting the primary connection port and the heat sensitive part. Is inclined ,
The distance between the outer periphery of the portion where the frame is attached in the main body and the first shaft is smaller than the distance between the outermost portion of the main body and the first shaft at the secondary connection port. A heat-sensitive open joint. A plurality of the secondary side connection ports are provided,
The heat-sensitive open joint according to claim 1, wherein the plurality of second axes intersect at a predetermined position of the first axis. 3. The heat-release joint according to claim 1, wherein an angle formed by the first axis and the second axis is 50 to 70 degrees.

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